Please help me with this, its just questions 7-10 !!

7. a hexagon (6 sides)
8. an octagon (8 sides)
9. hexadecagon (16 sides)
10. icosagon (20 sides)
hope this helps!
Answer:
i really hope this is right, but i'm not 100 % sure
Step-by-step explanation:
a convex polygon has 2 sides
720/ 2 = 360
1080/ 2 = 540
2520/2 = 1260
3240/ 2 = 1620